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Method for preparing microcrystalline porous foam glass tube

A technology of microcrystalline foam glass and porous foam, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of secondary pollution of waste water, waste of heat energy, and restrictions, and achieve high mechanical strength, good heat preservation effect, light weight effect

Inactive Publication Date: 2010-12-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the discharge of phosphorus slag is carried out by water quenching process, that is, the molten high-temperature phosphorus slag is water-quenched into phosphorus slag pellets. There are two disadvantages in this treatment method: (1) the phosphorus contained in the molten phosphorus slag A large amount of heat energy is wasted; (2) The water quenching process produces a large amount of corrosive hot steam, causing secondary pollution of wastewater
Therefore, the manufactured pipe fittings are subject to greater restrictions in use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a microcrystalline porous foam glass tube, the specific steps are as follows:

[0037] (1) Basic glass preparation

[0038] a. Ingredients

[0039] Various auxiliary materials are pulverized, then passed through a 40-mesh sieve, and the additives accounting for 25.0 wt% of the total weight are weighed according to the composition ratio, and the flux clarifying agent accounting for 5.0 wt% of the total weight, wherein the clarifying agent is NH 4 NO 3 and Na 2 SO 4 The composition of the mixture, the weight ratio between them is 2:1, the additive is Na 2 CO 3 , ZnO, MgO, SiO 2 and Al 2 o 3 The composition of the mixture, the weight ratio between them is 10:4:5:10:5, the additive and the clarifying agent are mixed to form a uniform auxiliary material batch.

[0040] b. Melting

[0041] Put the auxiliary material batch into the molten phosphorus slag accounting for 70.0wt% of the total weight, melt it at 1560 ° C for 4 hours to make a glass m...

Embodiment 2

[0052] A method for preparing a microcrystalline porous foam glass tube, the specific steps are as follows:

[0053] (1) Basic glass preparation

[0054] a. Ingredients

[0055] Various auxiliary materials are pulverized, then passed through a 40-mesh sieve, and the additives accounting for 25.0 wt% of the total weight are weighed according to the composition ratio, and the flux clarifying agent accounting for 3.0 wt% of the total weight, wherein the clarifying agent is NH 4 NO 3 、Na 2 SO 4 and CeO 2 A mixture of parts, the weight ratio between them is 4:1:1, the additive is Na 2 CO 3 , ZnO, MgO, SiO 2 and Al 2 o 3 The composition of the mixture, the weight ratio between them is 15:3:5:8:3, the additive is mixed with the clarifying agent to form a uniform auxiliary material batch,

[0056] b. Melting

[0057] Put the auxiliary material batch into the molten phosphorus slag accounting for 72.0wt% of the total weight, melt it at 1540 ° C for 4 hours to make a glass me...

Embodiment 3

[0068] A method for preparing a microcrystalline porous foam glass tube, the specific steps are as follows:

[0069] (1) Basic glass preparation

[0070] a. Ingredients

[0071] Various auxiliary materials are pulverized, then passed through a 40-mesh sieve, and the additives accounting for 27.0 wt% of the total weight are weighed according to the composition ratio, and the flux clarifying agent accounting for 5 wt% of the total weight, wherein the clarifying agent is NH 4 NO 3 、Na 2 SO 4 and CeO 2 The composition of the mixture, the weight ratio between them is 2:1:1, the additive is Na 2 CO 3 , ZnO, MgO, SiO 2 , CaF 2 and Al 2 o 3 The composition of the mixture, the weight ratio between them is 20:3:5:6:2:1, the additive and the clarifying agent are mixed to form a uniform auxiliary material batch.

[0072] b. Melting

[0073] Put the auxiliary material batch into the molten phosphorus slag accounting for 68wt% of the total weight, melt it at 1530°C for 4 hours t...

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Abstract

The invention relates to a method for preparing a microcrystalline porous foam glass tube. The method comprises the following steps of: firstly, preparing base glass, and obtaining base glass powder by mixing, melting, cooling and crushing; then preparing a microcrystalline porous foam glass raw material; then filling the raw material into a mold for molding; and finally, firing to obtain the microcrystalline foam glass tube. The method can prepare porous foam microcrystalline glass tube with light weight, heat preservation, abrasion resistance, corrosion resistance and high strength. The tube may have different colors and can be optionally cut and machined into needed tube components.

Description

technical field [0001] The invention relates to the field of preparation of foam glass tubes, in particular to a preparation method of microcrystalline porous foam glass tubes. Background technique [0002] Phosphorus slag is the industrial waste discharged during the production of yellow phosphorus by phosphate rock thermal method. For every ton of yellow phosphorus produced, about 8-10 tons of phosphorus slag are produced. Based on my country's current yellow phosphorus production capacity, the annual discharge of phosphorus slag is more than 5 million tons, and it is increasing year by year. At present, the national discharge of phosphorus slag is about 6.8-8.5 million tons. Usually, the discharge of phosphorus slag is carried out by water quenching process, that is, the molten high-temperature phosphorus slag is water-quenched into phosphorus slag pellets. There are two disadvantages in this treatment method: (1) the phosphorus contained in the molten phosphorus slag A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03B19/08
Inventor 曹建尉张复实梁开明
Owner TSINGHUA UNIV
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